Motor-truck.



W. R. MGKEEN & W. D BURTON.

MOTOR TRUCK.

APPLICATION mum JUNE 23,1913.

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w. R. MoKEBN & W. D. BURTON.

MOTOR TRUCK.

APPLICATION FILED JUNE 23, 1913.

UNITED STATES PATENT OFFICE.

WILLIAM R. MOKEEN AND WARREN-DEAN BURTON, OF OMAHA, NEBRASKA, ASSIGN-ORS TO MOKEEN MOTOR CAR COMPANY, OF OMAHA, NEBRASKA, A CORPORATION OFNEW JERSEY.

T 0 all whom it ma concern:

Be it known that we, WILLIAM R. Mo- KEEN and WARREN DEAN BURTON,citizens of the United States, residing at Omaha, in the county ofDouglas and State of Nebraska, have invented certain newand use fulImprovements in MotorTrucks, of which the following is a specification.Our invention relates to certain improvements in bogey motor trucks forrailway motor cars of that type in which the motor, usually an internalcombustion motor, is mounted directly upon the truck.

The purpose of the invention is to increase the strength of the truck,reduce the number of parts, lower the center of gravity of the combinedtruck and motor, reduce the clearance between the motor and the car bodynecessary to permit the usual swiveling of the truck, and generally toimprove the construction of this class of device and secure a number ofincidental advantages which will readily be recognized by those skilledin the art.

An embodiment of the invention which has proved successful in actual useis illustrated in the accompanying drawings, wherein:

Figure 1 is a perspective view of the body bolsters and centerbearingcasting assembled with the truck frame, spring plank, and truckbolster, certain parts belng partially broken away; Fig. 2 is aperspective view of the center bearing casting, detached from thebodybolster; Fig. 3 is a transverse axial section of the parts illustratedin Fig. 1 and Fig. 4 is a longitudinal axial section of the same.

The side frames 1 and the end frames 2 of the truck do not differsubstantially from those common in the art.- The side frames may be andpreferably are steel castings.

The bearing boxes, equalizer mechanism and kindred parts are of standardconstruction and as their form is not involved in the present invention,they have been omitted from the drawings.

The motor frame or base 3 is of a form suited to the engine used. In thedrawings it is illustrated as including the base and part of the crankcase of a six cylinder gas engine. The base 3 rests on and is securelybolted at its ends to the side frames 1 at their middles. The base 3thus becomes the Specification of Letters Patent.

Application filed June 23, 1913.

MOTOR-TRUCK.

Patented Sept. 29, 1914. Serial No. 775,358.

truck transom and combines in a singlepiece the functions of the enginebase and the truck transom. The lateralopening 4 in the base lsfor thepassage of the drive chain to the usual change speed gear and driving Jaxle (not shown).

Depending from the lower side of the base 3 are four link hanger pivotlugs 5 to which are pinned four swing links 6. These in turn are pinnedat 7 to the spring plank 8 having spring pockets 9. Ordinary bolstersprings 10 are mounted in the spring pockets 9 and support the truckbolster 11 in the usual manner, with its ends guided in openings in theside frames.

upon which rests the center casting 13, connee-ted by a center or kingpin 14. The center casting 1.3 is of the form most The truck bolster 11is formed with an integral center plate 12 clearly shown in Fig. 2. Ithas lateral ex-:

tensions 15 terminating in side bearings 16 which rest on companion sidebearings 17 carried on the truck bolster 11. The center casting also hasthree longitudinal arms.

One arm 18 extends in one direction and the s Another ad- Two bodybolsters 21 and 22 are used, the 1 bolster 21 having a single downwardextension 23 and the bolster 22 two downward extensions 24. The arm 18is bolted to extension 23 and the arms 19 and 20 to the ex tension 24.The bolsters 21 and 22 are con nectcd to the side sills 25 as shown. Inthe particular type of car in which we have used this truck the sideplates and framing carry substantially the entire load of the car. Thecenter sill 26 extends forward only to the rear side of the body bolster21, so that the space between the body bolsters 21 and 22 is clear. Incars having other types of framing the body bolsters 21 and 22 mightasourselves to the particular mode of connecting the bolsters to the carbody, above suggested.

-From theabove it will be observed that the motor is supported directlyabove the king or center pin, instead of forward or rearward thereof asheretofore. This secures a better distribution of weight and avoids anylateral movement of the motor as the truck swivels. This last feature isof the greatest importance in narrow gage cars in which the possibleclearance for such movement is very limited and also in all carsrequired to take curves of short radius. The 15' weight of the car issupported at a very low point in the truck, thus contributing to thestability of the latter. The use of the combined transom and motor basereduces the weight of the truck and the number of its parts withoutdetracting from its strength.

Although we have described the invention as applied to a truck oftheswin .motion type and regard that type as pre erable for the service,nevertheless, certain of the advantages of the invention might besecured with other types of truck. It is also obvious that while the useof two body bolsters together with a center plate bridgin between themgives a very desirable distri ution of load, the invention might, beadapted for use with a single bolster. It is only necessary that thebolster be of such form as to extend beneath the motor base and restupon the truck bolster. We, therefore, do not limit ourselves to thespecific arrangement shown, although that is preferred.

Having thus described our invention, what we claim is 1. The combinationwith a truck having a transom and a truck bolster mounted directly.beneath said transom, of a body bolster having a portion adapted toextend beneath said transom and rest on said truck bolster; and suitablepivotal connections between said bolsters.

2. The combination with a truck structure including a truck frame, truckbolsters and center bearing, of a motor base mounted upon said 'frameabove said center bearing, and a body bolster structure having a portionextending beneath the motor base and restin upon said center bearing.

3. he combination with a truck structure including a truck frame, truckbolster, center bearmg and side bearings, of a motor base mounted uponsaid frame above said including a truck frame, spring plank, bolstersprings, and truck bolster provided with the usual bearings, of a motorbase mounted on said frame over said truck bolster; and a body bolsterstructure having a portion extending beneath said motor base andentering into coactive relation with the bearings on said truck bolster.

5. The combination with a truck structure including a truck frame,spring plank, bolster sprin s, and truck bolster rovided with the usualearings, of a motor ase mounted on said frame over said truck bolster; apair of body bolsters at opposite sides of the motor base; and a centerplate connected to said body bolsters, extending beneath the motor baseand entering into coactive relation with the bearings on said truckbolster.

6. The combination of a truck frame; a combined truck transom and motorbase mounted on said frame; a spring plank mounted beneath said transom,swing links connecting said transom and spring plank; bolster springs onsaid plank; a truck bolster on said springs and provided with the usualbearings; and a body bolster having a portion extending beneath saidtransom in cooperative relation with said bearings.

7. The combination of a truck frame; a combined truck transom and motorbase mounted on said frame; a spring plank mounted beneath said transom;swing links connecting said transom and spring plank; bolster springs onsaid plank; a truck bolster on said springs and provided with the usualbearings; a pair of body bolsters at opposite sides of said transom; anda center plate connected to said body bolsters and extending beneathsaid transom in cooperative relation with the bearings on said truckbolster.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

WILLIAM R. MoKEEN. WARREN DEAN BURTON.

Witnesses: FRANK J. JUMPER, HARRY N. PARSONS.

